In all honesty most of us (fail our way to success) when it comes to relationships. If this were not true we'd all be married to our high school sweethearts!
The first few relationships most people enter into are before they themselves have figured who they are let alone what they want and need in mate. It's the equivalent of going shopping without a list. We pretty much let "impulsive connections" and "happenstance" dictate our relationship choices.
Some people are in love with "falling in love". They practice "serial monogamy" meaning they go from one committed relationship to another. They hate falling into a routine. Two years is a lifetime!
The more options one has the less crap they're willing to put up with! We also have a mentality today of "we can always do better".
Online dating for instance is almost equivalent to shopping. One can sit in the privacy of their home, enjoy a glass of wine, and scroll down hundreds if not thousands of profiles to pick and choose people the way one does furniture. Naturally if you do enter into a relationship that doesn't work out you can easily "re-activate" your online account and you'll have new prospects in no time. For those who only are looking for "intimate encounters" there are (hookup apps) and sites to find people in your area ready and willing.
Overall I believe having options in life is a good thing for the most part. However if one is not careful they might make a fast decision they will later regret. You don't want to breakup with a good person over something trivial. Sometimes it's best to step back and look at a situation to determine whether or not it's a true "deal breaker" or if it's just an "ego maker".
"Love isn't finding a perfect person. It's seeing an imperfect person perfectly." - Sam Keen